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111mathA
Author:
Wu Xiao-Ren
GeoGebra
New Resources
撒针估算面积实验
三角函数 的副本
科氏力 (Coriolis Force)
折扣
常见四边形是否是双心四边形
Discover Resources
Building Cones 建造圓錐體
Liu Hui's Method of Finding π
圓周 (圖形I)
四次函數圖形
PMC 2018-19
Discover Topics
Square
Prism
Cosine
Circle
Parametric Curves